Paul h



(No Model.) l I P. GRIMM. APPARATUSVFORY SEPARATING SOLID AND LIQUID PORTIONS 0F STAROH' REFUSE, w.

O No. 296.000.

POI tented Ap l, 1884.

N. Prrins. mo-wwmvm. wim o. c.

Cove, in the county of Queens and State of New York, have invented a certain new and EJNITED STATES ATEN'r rrreE. A

PAUL n. CEIMM, OF GLEN CovE, NEw YORK, AssICNoE TO THE GLEN CovE MANUFACTURING COMPANY, OF sAME PLACE.

APPARATUS FOR SEPARATING SOLID AND LIQUID PORTIONS OF STARCH REFUSE, dc.

SPECIFICATION forming part of Letters Patent No. 296,000, dated April 1, 1894.

Application filed December 31, 1883. (No model.)

To ald whom it may concern: Be it known that I, PAUL H. GRIMM, of Glen useful Improvement in Apparatus for Separating Solid and Liquid Portions of Starch Refuse, 860., of which the following is a specifi cation. 4

Although my invention is applicable to apparatus for separating solid substancesof various kinds from the water or other liquid with which they aresaturated, it is especially intended to be embodied in apparatus for express ing water from starch refuse or the corn refuse which comes from starch works, and which is useful for feeding stock. In the manufacture very large proportion of water (often as much as seventy or eighty per cent, by weight) which is combined with the solid substance, ordinary rolls will not perform the work satisfactorily, even thoughboth the rolls of each pair be clothed with india-rubber or other elastic material. I

My invention consists, essentially, in the combination, with an upper roll, of a lower roll of novel construction, hereinafter particularly described, whereby I afford a free and direct avenue of escape for the water which is expressed at the point of contact between the two rolls of the pair.

The invention also consists inother combinations of parts and features of construction, which are hereinafter described. In the accompanying drawings, Figure 1 is a side elevation of an apparatus embodying my invention. Fig. 2 is a vertical section thereof in a plane transverse to the axes of the rolls. Fig. 3 is a detail view of oneof the rolls 0 in a well-understood manner.

detached from other parts. 4. is a detail View of a roller of slightly-modified form, also embodying my invention; and Fig. 5 is a de tail view of a roller of still another modified form, also embodying the invention.

Similar letters of reference designate corresponding parts in the several figures.

The essential working parts of the apparatus are rolls, of which I employ one or more pairs.

. I have here represented two pairs of rolls, A

rolls are rotated in the desired directions is shown in Fig. 1. On the shafts of the lower rolls, BB, of the two pairs are spur-wheels D D, which gear into corresponding wheels, 0 O, on the shafts of the upper rolls, A A, of the two pairs. 1

E designates a driving-shaft, which may be rotated by a belt and pulleys or otherwise, and upon said shaft is a wheel,'E,which gears into the wheels D D, and through them imparts motion to all the rolls in the direction of the arrows shown in Fig. 1. The bearingsof the lower rolls, B B,arefixed to a base frame, F, and the bearings a of the upper rolls are movable between uprights F, wherein they are guided. The bearings a are acted upon by springs 12, of rubber or other material, to produce pressure between theupper and lower rolls, and the tension of these springs and the pressure produced may be varied by screws As here shown, the spring I), for the upper roll, A, acts directly on a block, b, above the bearing a.

The upper rolls, A A, may be solid and covered with india-rubber, d, or other suitable material, to give them an elastic surface, but I make no claim to any special construction of theseupper rolls. j I

G designates afeeding-chute, which extends downward from a hopper, G, and which may extend the full length of the rolls. The substance from which water or other liquid is to be expressed passes down the chute G, and is delivered upon the lower roll B as near as possible to the point of contact of the rolls A B. By the passage of the substance between the rolls A B, a large proportion of the liquid is expressed,and the partly-dried substance is removed from the roll B by a scraper or inclined board, 6, (shown in Fig. 2,) and by said scraper or board is delivered on the roll B as near as possible to its point of contact with the roll A. After the substance has had additional liquid expressed from it by its passage between the rolls A B of the second pair, it is delivered by means of a scraperor inclined board, e, also shown in Fig. 2.

Iwill now describe the construction of the lower rolls, B B, of the two pairs, which is such that provision is afforded for the free escape of liquid expressed at the point or line of contact between the lower and upper rolls of each pair. The two lower rolls, BB, are or may be similar in construction, and a description of one roll will apply to both. As here shown, the lower roll B or B consists of skeleton heads or spiders f, of which there is one at each end of the roll, and a cylindric body, which may be built up of heavy staves or pieces, as best shown in Fig. 2. In the periphery of the body 9 are formed numerous gutters or channels, h, which extend approximately in the direction of the length of the roll, and which may be formed by cutting grooves or channels in the body 9, or by securing thereto ribs orlugs h, the latter method being, perhaps, most desirable. The roll having the gutters h is covered over its entire periphery with reticulated or perforated metal or othermaterial, z, and for this covering wirecloth ismost desirable, as it affords the greatest facility for the passage of liquid through it. 010th woven of fibrous material may be used. The substance delivered on the roll B from the chute G is subjected to pressure between the rolls A B, and the water is expressed therefrom. hen this substance is starch refuse, the volume of water expressed will be very great, and hence it is of the great est importance to provide for the free escape of water from the gutters h.

I have shown in Fig. 3 one of'the lower rolls with the wire-cloth covering t partly removed in order to show the direction of the gutters or channels h. As shown in said figure, the gutters or channels extend obliquely on the roll, and are inclined in opposite directions from the center of the length of the roll. The direction of rotation of the roll is indicated by the arrow in Fig. 3, and it will be seen that the inclination of the gutters or channels h is in the direction of rotation of the roll, so that the water expressed from the substance and passing into the gutters or channels through the wire-cloth will always be directed by the gutters or channels ahead of the point or line of pressure. The obliquity gutters or channels it may extend obliquely in one direction from end to end of the roll, as shown in Fig. 4:; but this roll would be covered with wire-cloth or other reticulated or perforated material, like the roll shown in Fig. 3. In Fig. 4 I have omitted the wirecloth covering in order to show the gutters or channels it more clearly. The gutters or channels h of the rolls shown in Figs. 2, '3, and 4 are all imperforate throughout their length, and deliver the water only at their ends; but in Fig. 5 I have shown a'roll which may be substituted for the roll shown in Fig. 3. This roll also has gutters or channels h,- but instead of extending obliquely on the roll they extend parallel with the axis of the roll. The body of this roll is perforated throughout the length of the roll at the bottom of each gutter or channel, as shown at h and hence water does not have to flow to the ends of the gutters to escape, but can pass directly through the perforations h in the body 9 to the hollow center of the roll, and escape at the ends of the roll. The gutters or channels of the roll shown in Fig. 5 are open at the ends, as in the other rolls shown, and water can escape both at the ends of the gutters or channels and through the body of the roll.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

1. In an apparatus for separating solid and liquid substances, the combination of a'lower roll, having in its periphery guttersor channels extending lengthwise of the roll, and also having a reticulated or perforated covering, an upper roll for operating in conjunction with said lower roll, and means for delivering the wet substance upon said lower roll near its point of contact with said upper roll, substantially as herein described.

2. In an apparatus for separating solid and liquid substances, the combination of a lower roll, having in its periphery gutters or chan nels which are oblique to the axis of the roll, and also having a reticulated or perforated covering, an upper roll for operating in conjunction with said lower roll, and means for delivering the wet substance upon the said lower roll near its point of contact with said upper roll, substantially as herein described.

3. The combination of the lower roll, B, having gutters or channels h, which extend obliquely in opposite directions toward its ends, .and also having a covering, 1', of reticulated or perforated material, the upper roll, A, and the feeding-chute Gr, substantially as herein described.

IIO

4; The combination of the lewer rollsQBB, f and the feeding-chute G, all arranged and each having gutters or channels h in its peadapted for operation substantially as herein riphery, and each having a covering, 1', of redescribed. l :ticnlat'ed or perforated material, the upper PAUL H. GRIMM. f 5 rolls, A A, the scraper e, for delivering mate- Witnesses:

rialfrom the roll B to the roll B, the scraper FREDK. HAYNEs, $6", for delivering material from theroll B, ED. L. MORAN. 

